Ejemplo n.º 1
0
 public void applyAttachedObject(FacesContext context, UIComponent parent) {
   FaceletContext ctx =
       (FaceletContext) context.getAttributes().get(FaceletContext.FACELET_CONTEXT_KEY);
   // cast to a ValueHolder
   ValueHolder vh = (ValueHolder) parent;
   ValueExpression ve = null;
   Converter c = null;
   if (this.binding != null) {
     ve = this.binding.getValueExpression(ctx, Converter.class);
     c = (Converter) ve.getValue(ctx);
   }
   if (c == null) {
     c = this.createConverter(ctx);
     if (ve != null) {
       ve.setValue(ctx, c);
     }
   }
   if (c == null) {
     throw new TagException(this.tag, "No Converter was created");
   }
   this.setAttributes(ctx, c);
   vh.setConverter(c);
   Object lv = vh.getLocalValue();
   FacesContext faces = ctx.getFacesContext();
   if (lv instanceof String) {
     vh.setValue(c.getAsObject(faces, parent, (String) lv));
   }
 }
Ejemplo n.º 2
0
  /**
   * populate the argument component with values, being sensitive to the possible multi-nature of
   * the values, and to the type of the values.
   *
   * @param context the <code>FacesContext</code> for the current request
   * @param component the <code>UIComponent</code> to populate
   * @param componentType the component type
   * @param value the value
   * @param valueType the value type
   */
  private void populateComponentWithValue(
      FacesContext context,
      UIComponent component,
      String componentType,
      String value,
      String valueType) {
    Application application = context.getApplication();
    Converter converter = null;

    // if we need a converter, and can have a converter
    if (!"java.lang.String".equals(valueType) && component instanceof ValueHolder) {
      // if so create it,
      try {
        converter = application.createConverter(CarStore.loadClass(valueType, this));
        // add it to our component,
        ((ValueHolder) component).setConverter(converter);
      } catch (ClassNotFoundException cne) {
        FacesMessage errMsg = MessageFactory.getMessage(CONVERTER_ERROR_MESSAGE_ID, valueType);
        throw new IllegalStateException(errMsg.getSummary());
      }
    }

    // if this component is a SelectOne or SelectMany, take special action
    if (isMultiValue(componentType)) {
      // create a UISelectItems instance
      UISelectItems items = new UISelectItems();
      items.setValue(parseStringIntoArrayList(value, converter));
      // add it to the component
      component.getChildren().add(items);
    } else {
      // we have a single value
      if (null != converter) {
        component.getAttributes().put("value", converter.getAsObject(context, component, value));
      } else {
        component.getAttributes().put("value", value);
      }
    }
  }
Ejemplo n.º 3
0
 public void applyMetadata(FaceletContext ctx, Object instance) {
   ((ValueHolder) instance)
       .setConverter(ctx.getFacesContext().getApplication().createConverter(this.converterId));
 }
  @SuppressWarnings("deprecation")
  public UIComponent processWidget(
      UIComponent component,
      String elementName,
      Map<String, String> attributes,
      UIMetawidget metawidget) {

    // Actions don't get converters

    if (ACTION.equals(elementName)) {
      return component;
    }

    // Recurse into stubs...

    if (component instanceof UIStub) {
      // ...whose children have the same value binding as us...
      //
      // (this is important because choice of Converter is based off the attributes Map, and
      // if the value binding is different then all bets are off as to the accuracy of the
      // attributes)

      javax.faces.el.ValueBinding valueBinding = component.getValueBinding("value");

      if (valueBinding != null) {
        String expressionString = valueBinding.getExpressionString();

        List<UIComponent> children = component.getChildren();

        for (UIComponent componentChild : children) {
          javax.faces.el.ValueBinding childValueBinding = componentChild.getValueBinding("value");

          if (childValueBinding == null) {
            continue;
          }

          if (!expressionString.equals(childValueBinding.getExpressionString())) {
            continue;
          }

          // ...and apply the Converter to them

          processWidget(componentChild, elementName, attributes, metawidget);
        }
      }

      return component;
    }

    // Ignore components that cannot have Converters

    if (!(component instanceof ValueHolder)) {
      return component;
    }

    // Defer evaluation of EL-based converters, else we will fail trying to store/restore them
    // from the ViewState

    ValueHolder valueHolder = (ValueHolder) component;
    String converterId = attributes.get(FACES_CONVERTER);

    if (converterId != null && FacesUtils.isExpression(converterId)) {

      FacesContext context = FacesContext.getCurrentInstance();
      component.setValueBinding(
          "converter", context.getApplication().createValueBinding(converterId));
      return component;
    }

    // Standard Converter

    valueHolder.setConverter(getConverter(valueHolder, attributes));

    return component;
  }